Examine the following parameters for a database instance:
Which three initialization parameters are not controlled by Automatic Shared Memory Management (ASMM)? (Choose three.)
Manually Sized SGA Components that Use SGA_TARGET Space
SGA Component, Initialization Parameter
/ The log buffer
LOG_BUFFER
/ The keep and recycle buffer caches
DB_KEEP_CACHE_SIZE
DB_RECYCLE_CACHE_SIZE
/ Nonstandard block size buffer caches
DB_nK_CACHE_SIZE
Note:
* In addition to setting SGA_TARGET to a nonzero value, you must set to zero all initialization parameters listed in the table below to enable full automatic tuning of the automatically sized SGA components.
* Table, Automatically Sized SGA Components and Corresponding Parameters
What are two of the benefits of installing Oracle Grid Infrastructure for a stand-alone server before installing and creating an Oracle database on the same server? (Choose two.)
You are administering a database stored in Automatic Storage Management (ASM). You use RMAN to back up the database and the MD_BACKUP command to back up the ASM metadata regularly. You lost an ASM disk group DG1 due to hardware failure.
In which three ways can you re-create the lost disk group and restore the data? (Choose three.)
Which statement is true concerning compression during an Online Datafile Move?
What is the effect of specifying the "ENABLE PLUGGABLE DATABASE" clause in a "CREATE DATABASE'' statement?
* The CREATE DATABASE ... ENABLE PLUGGABLE DATABASE SQL statement creates a new CDB. If you do not specify the ENABLE PLUGGABLE DATABASE clause, then the newly created database is a non-CDB and can never contain PDBs.
Along with the root (CDB$ROOT), Oracle Database automatically creates a seed PDB (PDB$SEED). The following graphic shows a newly created CDB:
* Creating a PDB
Rather than constructing the data dictionary tables that define an empty PDB from scratch,
and then populating its Obj$ and Dependency$ tables, the empty PDB is created when the CDB
is created. (Here, we use empty to mean containing no customer-created artifacts.) It is referred
to as the seed PDB and has the name PDB$Seed. Every CDB non-negotiably contains a
seed PDB; it is non-negotiably always open in read-only mode. This has no conceptual
significance; rather, it is just an optimization device. The create PDB operation is implemented
as a special case of the clone PDB operation.
